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Underground Mine Air and Strata Temperature Change Due to the Use of Refuge Alternatives Mining, Metallurgy and Exploration (90281dd3-2aab-47ab-9150-b1897bd40ef5)
By M. A. Reyes, L. Yan
Heat and humidity buildup withn refuge alternatives (RAs) may expose occupants to physiological hazards such as heat stress. The Mine Safety and Health Administration (MSHA) regulations require RAs in
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Nuclear Energy Industry – Past, Present and Future
By James J. Graham
Uravan, Ambrosia Lake, Gas Hills and South Texas are all historic names in US uranium. These mining areas supplied the uranium that brought the United States into the nuclear age during the 1960s, an
Jan 1, 2002
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Enrichment of the manganese to iron ratio of ferruginous low- grade manganese ore using solid reductant
By Y. V. Swamy, B. Bhoi, H. S. Ray
Low-grade manganese ores with low Mn/Fe ratios can he enriched through selective carbon reduction of iron oxide to magnetite followed by magnetic separation o f the magnetite. Thermogravimetric ana
Jan 1, 1999
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Mining & Sustainable Development: A Red Dog Case Study
By D. H. Horswill
Red Dog, the world’s largest zinc mine, is located ninety miles north of the Arctic Circle in northwest Alaska on lands owned by the Inupiat Eskimo organization called NANA. NANA received a subsurfac
Jan 1, 2000
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Automatic Selection of Fragment Images From a Moving Conveyor Belt
By W. X. Wang
In the mining and quarry industries, rock fragments are often transported by conveyor belt. To estimate the qualities of the rock fragments (i.e., size distribution and shape), an operator must take
Jan 1, 1996
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Mining Company of the Future;Anglo American CEO Joins Group to Open Discussion
By William Gleason
The mining industry is at a crossroads. Currently, there is an estimated $25 billion worth of projects around the world that have been stopped as the consequence of a dispute or disagreement with thei
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Murray Basin heavy mineral strandline deposit mineralogy
By A. W. Popp
After forty years of exploration and development, the heavy mineral sand deposits of the Murray Basin are on the eve of substantial exploitation by Iluka Resources Limited, Southern Titanium NL and RZ
Jan 1, 2005
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Signifcant developments in dry rare-earth magnetic separation
By M. Dobbins
The advent of the more efficient and effective rare-earth roll (RER) separator in the early 1980s began a new era of dry magnetic separation. The RER units quickly became the separator of choice withi
Jan 1, 2010
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Rational Design Of Yield Pillars: Improved Understanding Of Yielding Mechanism
By K. T. Lee, M. U. Ozbay, M. D. G. Salamon
Design of yielding chain pillars in deep coal longwall mines is not as well established due mainly to the lack of knowledge in the behavior of coal pillars in the post-peak regime. This study shows t
Jan 1, 2001
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Ground Freezing for Boston Central Artery Contract Section C09A4, Jacking of Tunnel Boxes
By Paul C. Schmall, John F. Donohoe, Arthur B. Corwin, Derek Maishman
Ground freezing was utilized to provide complete stability of the excavation face and complete groundwater cut-off for the jacking of the three tunnel boxes for the Interstate 90 / Interstate 93 appro
Jan 1, 2001
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Construction of a Low Rock Cover Cavern for the Neutrinos at Main Injector Facility
By Bhaskar B. Thapa, Christopher Laughton, Michael P. Bruen
At Fermilab, located in Batavia, Illinois, a 4,000-foot underground complex of tunnels and caverns is being excavated on a decline of six percent, at depths of up to350 ft, below grade. The site geolo
Jan 1, 2001
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Challenges And Triumphs Of A Large-Diameter Microtunnel Relief Interceptor Sewer In Indianapolis
By Jeremy Morris
The city of Indianapolis has more than 25,000 homes currently on septic systems. Many of these systems do not function well because of their age and surrounding soil conditions. As Indianapolis has wo
Jan 1, 2011
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The Role Of The MMAJ And The Activities Of The Japanese Mining Industry In Global Resources Development
By H. Ikeda
INTRODUCTION [Slide 1] The Role of the MMAJ Ladies & Gentlemen, it is a pleasure for me to be able to make a speech at this SME annual meeting, representing the Metal Mining Agency of Japan.
Jan 1, 2001
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Design And Construction Of Norad Expansion Project "Excavation Phase"
By Gerald G. Griswold, Allan G. Provost
INTRODUCTION The Norad Expansion Project was located 10 miles southwest of Colorado Springs, Colorado, within Cheyenne Mountain. The expansion areas to be excavated would be adjacent to the existin
Jan 1, 1979
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Final Tunnel Liner At The Mill Creek 3 Project
By M. Schafer
The 6-m- (20-ft-) diameter cast-in-place tunnel lining for Phase 3 of the Mill Creek Tunnel (MCT3) has been completed. This article summarizes aspects of liner design and ad-dresses the construction a
Jan 1, 2008
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Ground Control Monitoring System In Leeville Underground Mine - Preprint 09-063
By C. Sun
The Leeville underground mine has been in operation since 2006 and currently produces 3,200 tons of ore per day with an average gold grade of 0.4 opt. The mine has a large horizontal extent of 2,500 f
Jan 1, 2009
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Handling The Impacts Of Blasting On Grand Central Terminal For The MTA?s East Side Access Project
By A. J. Thompson
The Metropolitan Transportation Authority (MTA) East Side Access project (ESA) will, when it is complete, provide a new link to the east side of Manhattan from Long Island, NY that, linked with the Se
Jan 1, 2012
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Lineament Analysis: Identification Of Structural Controls On Ground Instability In Surface And Underground Mines (b5ba2cd3-4de8-4cb0-9e01-83ff5030f620)
By S. E. Phillipson, P. L. Tyrna
Lineament analysis, a remote sensing application for geological structures, has been criticized for reliance on subjective interpretations. The Mine Safety & Health Administration’s Roof Control Divi
Jan 1, 2002
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Tekflex As A Spray-On Screen Replacement In An Underground Hard Rock Mine (fe0b3806-09e4-4f12-957e-fdb8d742c7f8)
By Michael Amick, G. Swan, R. Hill, C. Pritchard
Falconbridge, a major base metal producer in the Sudbury Basin of Ontario, identified a need to find a safe and cost effective replacement for welded-wire mesh used to support loose ground during unde
Jan 1, 2000
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Reclaiming Steep-Slope Coal Mines In The Eastern US For Successful Reforestation
A methodology has been developed and demonstrated to be effective in reclaiming surface-mined land for a forestry post-mining land use. The forestry reclamation approach (FRA) has been applied, almost
Jan 1, 2011